UPD750108CU(A) データシートの表示（PDF） - NEC => Renesas Technology

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UPD750108CU(A)

4 BIT SINGLE-CHIP MICROCONTROLLER

NEC => Renesas Technology 

µPD750104, 750106, 750108, 750104(A), 750106(A), 750108(A)

6.4 Clock Output Circuit

The clock output circuit outputs a clock pulse from the P22/PCL pin. This clock pulse is used for remote control

waveform output, peripheral LSIs, etc.

• Clock output (PCL): Φ, 125, 62.5, or 15.6 kHz (at 1.0 MHz)

Φ, 250, 125, or 31.3 kHz (at 2.0 MHz)

From the clock

generator

Φ

fCC/23

fCC/24

fCC/26

Figure 6-3. Clock Output Circuit Configuration

Selector

Output

buffer

PCL/P22

CLOM3 0 CLOM1 CLOM0 CLOM

PORT2.2

P22 output

latch

4

Internal bus

Bit 2 of PMGB

Port 2 input/

output mode

specification bit

Remark Measures are taken to prevent outputting a narrow pulse when selecting clock output enable/disable.

24

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